you cant find raiku in Pokemon pearl just Pokemon gold
you dont
you can't. only in platinium. you'd have to find a way to migrate it at the pal park.
listen to me SHUT UP!!!!!!!!!!!!!!!! I know how to get every Pokemon but I won't tell so LEAVE ME ALONE
Raiku Kemppi's birth name is Raiku Jaanukka Pennanen.
Here is a battle of Raiku and Onix. Raiku uses shockwave on Onix, paralyzing it. Then Raiku uses thunderbolt on Onix causing little damage on it. Raiku uses thunderstrike on Onix, causing little damage. Onix uses earthquake, killing Raiku.
you have to beat elite 4 then catch all unowns.
Once you have seen it in the Burnt Tower, it'll be in the grass randomly. It takes patience to find it.
For a complete answer: visit gamefaqs and search for Pokemon Gold & Silver (or whatever version you are playing on) if you must know: you have to encounter Raiku first (I don't know where he is) it is a very tedious process that involves looking in your pokedex you have to look for Raiku and look at location-the pokedex will tell you where Raiku is but he constantly moves The direction he travels is random, just keep pursuing Raiku until you corner him. Don't use fly (he'll completely change location and be further away if you do that).
You must defeat the elite four then find them in the grass because there are roaming. Also if you chose squirtle then raiku appears, if you chose bulbasaur then entei will appear, and if u chose charmander then suicine will appear They have to have been your starter
it runs about all over the map so its just luck if you run into him
the place where raikou is most likely to be found is route 1.
you have to start with Bulbasaur.then beat the elite 4.after that Raiku will become then you have to look for it